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Nakura Y, Wu HN, Okamoto Y, Takeuchi M, Suzuki K, Tamura Y, Oba Y, Nishiumi F, Hatori N, Fujiwara S, Yasukawa K, Ida S, Yanagihara I. Development of an efficient one-step real-time reverse transcription polymerase chain reaction method for severe acute respiratory syndrome-coronavirus-2 detection. PLoS One 2021; 16:e0252789. [PMID: 34086827 PMCID: PMC8177496 DOI: 10.1371/journal.pone.0252789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/21/2021] [Indexed: 11/30/2022] Open
Abstract
The general methods to detect the RNA of severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) in clinical diagnostic testing involve reverse transcriptases and thermostable DNA polymerases. In this study, we compared the detection of SARS-CoV-2 by a one-step real-time RT-PCR method using a heat-resistant reverse transcriptase variant MM4 from Moloney murine leukemia virus, two thermostable DNA polymerase variants with reverse transcriptase activity from Thermotoga petrophila K4 and Thermococcus kodakarensis KOD1, or a wild-type DNA polymerase from Thermus thermophilus M1. The highest performance was achieved by combining MM4 with the thermostable DNA polymerase from T. thermophilus M1. These enzymes efficiently amplified specific RNA using uracil-DNA glycosylase (UNG) to remove contamination and human RNase P RNA amplification as an internal control. The standard curve was obtained from 5 to 105 copies of synthetic RNA. The one-step real-time RT-PCR method’s sensitivity and specificity were 99.44% and 100%, respectively (n = 213), compared to those of a commercially available diagnostic kit. Therefore, our method will be useful for the accurate detection and quantification of SARS-CoV-2.
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Affiliation(s)
- Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Heng Ning Wu
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Yuya Okamoto
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Muneyuki Takeuchi
- Department of Intensive Care Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita-city, Osaka, Japan
| | - Yoshitaka Tamura
- Department of Clinical Laboratory, Osaka Habikino Medical Center, Habikino-city, Osaka, Japan
| | - Yuichiro Oba
- Department of General Medicine, Osaka General Medical Center, Osaka-city, Osaka, Japan
| | - Fumiko Nishiumi
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Nobuaki Hatori
- The Research Foundation for Microbial Diseases of Osaka University, Suita-city, Osaka, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda-city, Hyogo, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto-city, Kyoto, Japan
| | - Shinobu Ida
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
- * E-mail:
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